A field survey of molluscicide-degrading microorganisms in the Caribbean area

Employing a bacteriologic medium in which the sole nitrogen source was the organic molluscicide, Bayluscide, isolations were made of organisms from more than 40 field and laboratory sites in Puerto Rico, the Dominican Republic, St. Lucia, and Venezuela. Materials were subcultured four times, then selected strains isolated from the snail Biomphalaria glabrata were subjected to standard diagnostic procedures. In all, 6 different bacterial strains were identified as members of the genus Psuedomonas and 2 as members of the genus Aerobacter. Distribution of molluscicide-utilizing bacteria was practically universal, being found in water, sediment, and snail intestine contents. Bacteria were isolated with 15 species of mollusc tested for the presence of such organisms. The possible significance of molluscicide-degrading organisms, relative to snail control projects is discussed (Summary)

Problems in bilharzia control

Bilharzia is endemic in St. Lucia. Details of the snail vector and the geographical topography are presented. Problems involved in molluscides and treatment of this disease are given (AU)